Maintenance device for construction machine

• US 9,777,466 B2
• Filed: 06/20/2014
• Issued: 10/03/2017
• Est. Priority Date: 06/21/2013
• Status: Active Grant

• Current Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Inventors: Aizawa, Taiki, Morita, Yuichiro, Shibata, Koichi
• Primary Examiner(s): Cheung, Mary
• Application Number:
  US14/770,997
• Publication Number:
  US 20160002892A1
• Time in Patent Office: 1,201 Days
• CPC Class Codes: B60R 16/0232 for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
• CPC Class Codes: E02F 9/2062 Control of propulsion units for control of the prime mover depending on the load in a hydraulic or pneumatic drive E02F9/2246
• CPC Class Codes: E02F 9/2066 of the type combustion engines
• CPC Class Codes: E02F 9/2292 Systems with two or more pumps
• CPC Class Codes: E02F 9/2296 Systems with a variable displacement pump
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 23/0283 Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06
• CPC Class Codes: G07C 9/20 involving the use of a pass

Abstract

A maintenance device for a construction machine includes: an abnormality detection means for detecting abnormality of an apparatus installed on the construction machine; an abnormality information output means for outputting abnormality information about the apparatus detected by the abnormality detection means; and a maintenance mode setting means for setting a maintenance mode for performing a maintenance work of the apparatus, wherein the abnormality information output means for eliminating negation or output of the information, if any abnormality of the apparatus is detected in a state in which the maintenance mode is set by the maintenance mode setting means.

Claims

1. A maintenance device for a construction machine, comprising:

an abnormality detection unit that detects abnormality information of an apparatus installed on the construction machine;

an abnormality information output unit that outputs the abnormality information about the apparatus detected by the abnormality detection unit;

a storage unit that stores the abnormality information about the apparatus outputted by the abnormality information output unit;

a controller that controls output processing of the abnormality information output unit and storing processing of the storage unit;

a maintenance mode setting unit that sets a maintenance mode for performing a maintenance work of the apparatus;

an engine start up lock unit that locks start up of an engine in a state in which the maintenance mode is set; and

an unlock unit that unlocks the start up of the engine, wherein,

when the maintenance mode is not set, the controller executes the output processing and the storing processing of the abnormality information about the apparatus detected by the abnormality detection unit, and

when the state in which the maintenance mode is set is continued and the start up of the engine is unlocked by the unlocked unit, the controller does not execute the output processing and the storing processing of the abnormality information about the apparatus detected by the abnormality detection unit.